Chemical fertilizer pollution control using drip fertigation for conservation of water quality in Danjiangkou Reservoir
文献类型：SCI/SSCI论文
| 作者 | Pei L. |
| 发表日期 | 2014 |
| 关键词 | Tea Drip fertigation Total nitrogen loss Total phosphorus loss Runoff Leaching areca-catechu l. surface runoff phosphorus loss nutrient losses nitrate nitrogen soil irrigation impact sediment |
| 英文摘要 | The use of drip fertigation to reduce fertilizer pollution of the Danjiangkou Reservoir of China was explored. Specifically, a 4-year experiment was conducted to identify the optimum fertilizer rate for fertigation of a tea plantation. The treatments included five fertigation levels, 10 % (10 % NPK), 20 % (20 % NPK), 30 % (30 % NPK), 40 % (40 % NPK) and 50 % (50 % NPK) of the traditional fertilizer dose, and the traditional fertilizer dose under rain-fed conditions as a control (CK). Relative to CK, fertigation treatments decreased total nitrogen (TN), total phosphorus (TP) runoff loss (kg ha(-1)) and TN and TP concentrations (mg kg(-1)) in leaching water by 51.9-70.8, 51.7-67.5, 56.1-85.4, and 39.1-56.5 %, respectively. Total N, TP runoff loss and TN concentrations in leaching water generally increased with increasing fertilization rate among fertigation treatments; however, there was no significant difference in TP concentrations of leaching water. Yield increased with increasing rate of fertilization among fertigation treatments. The yields of the 30-50 % NPK treatments were similar (P > 0.05), but higher (P < 0.05) than those of the 10-20 % NPK treatments. There were no significant differences in yield among the 30 % NPK, 40 % NPK and CK treatments. The relative yields increased rapidly when the relative fertilizer rate was between 10 and 33 %; however, this increase slowed at fertilization rates above 33 %. Based on the yield and fertilizer pollution control, fertigation with 33 % of the traditional fertilizer dose should be considered for tea production in the water source area. |
| 出处 | Nutrient Cycling in Agroecosystems |
| 卷 | 98 |
| 期 | 3 |
| 页 | 295-307 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1385-1314 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/29721]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Pei L.. Chemical fertilizer pollution control using drip fertigation for conservation of water quality in Danjiangkou Reservoir. 2014. |
入库方式： OAI收割
来源：地理科学与资源研究所
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